Upgrading stock 1971 318 heads

wow i guess i read that wrong, so your saying a 1971 block 318 stock compression is more in the 7's than the advertised 8:6:1? i thought only 1980s 360 where that low. yeah ill do a compression test see what i get.
You read it wrong again; The Static compression Ratio is different from the Dynamic ratio which is different again from the effective ratio. Re-read the colorized portion of post #52.
The only thing that counts is if you're happy with it